Harry Potter Birthday Cake For 11 Year Old

I've been asked about making a Harry Potter cake for an 11 year old's birthday. I don't know if it's a boy or girl. It's likely going to be a 10" square or 9x13" cake covered in buttercream. I'm waiting to hear if the client has any particular ideas. I've suggested stuff like the Gryffendor crest, the Hogwarts crest, that sort of thing. I like the idea of a FBCT but other than the crests I'm having trouble finding images. I'd like to do one of Harry on a broom perhaps playing Quidditch, but all the pics I find seem to be photos. Has anyone done a FBCT using a photo? Anyone have any ideas? I've got to provide a quote and design in the next day or so. Thanks.